CVE-2023-2971 Typora Local File Disclosure

Medium 6.3 Published 19 Aug 2023 Updated 7 Oct 2024

A crafted webpage or malicious markdown file allows attackers to access local files and exfiltrate them to remote servers via improper path handling in Typora.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-2971?

CVE-2023-2971 is a medium-severity path traversal vulnerability in Typora, published on 19 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Improper path handling in Typora before 1.7.0-dev on Windows and Linux allows a crafted webpage to access local files and exfiltrate them to remote web servers via "typora://app/typemark/". This vulnerability can be exploited if a user opens a malicious markdown file in Typora, or copies text from a malicious webpage and paste it into Typora.

Weakness: CWE-22

Which versions are affected by CVE-2023-2971?

It affects 1 product.

Products include Typora Typora.

How do I fix CVE-2023-2971?

No fix has been published for CVE-2023-2971 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-2971 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2971 exists.

Sources

Also known as GHSA-33hj-h3v9-w687.